JEE Main Physics question

Which of the following statements about the gravitational constant is true? **[WB-JEE 2006]**

(A)It is a force
(B)It has no unit
(C)It has the same value in all systems of units
(D)It does not depend on the nature of the medium in which the bodies are keptCorrect

Answer: (D)

Solution

is a universal proportionality constant (unit N m²/kg²), not a force, so (A) is wrong. It has a unit, so (B) is wrong. Its numerical value changes with the unit system (e.g. CGS vs SI), so (C) is

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Question ID VK-154240